Question

当按下列表视图中的项目时，我一直在尝试用另一个片段替换当前片段。但是，当按下该按钮时，会触发onClick方法，但它不会替换该片段。

JournalFragment.java

 public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        rootView = inflater.inflate(R.layout.fragment_journal_view, container, false);
        context = getContext();
        ListView myView = (ListView) rootView.findViewById(R.id.listView);

        TableControllerUser TCU = new TableControllerUser(context);
        final TableControllerJournal TCJ = new TableControllerJournal(context);


        int accID = TCU.getLoggedInId();
        Cursor cursor = TCJ.getAllJournals(accID);
        Cursor allFood = TCJ.getAllFoodJournals(accID);
        Cursor allActivity = TCJ.getAllActivityJournals(accID);
        Cursor[] cursors = {cursor, allFood, allActivity};

        MergeCursor m = new MergeCursor(cursors);

        final JournalAdapter adapter = new JournalAdapter(context, m, 0);

        myView.setAdapter(adapter);

        myView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Cursor c = (Cursor) adapter.getItem(position);
                Toast.makeText(getActivity(), "onClick Pressed!", Toast.LENGTH_SHORT).show();

                String title = c.getString(c.getColumnIndexOrThrow("title"));

                if (title.contains("Glucose")) {
                    String glucose = c.getString(c.getColumnIndexOrThrow("glucose"));
                    String dateTime = c.getString(c.getColumnIndexOrThrow("glucose_time"));
                    String journalId = c.getString(c.getColumnIndexOrThrow("_id"));
                    String split[] = dateTime.split(" ");
                    String date = split[0];
                    String time = split[1];

                    Fragment gluFrag = new GlucoseFragment();

                    Bundle bundle = new Bundle();
                    bundle.putString("time", time);
                    bundle.putString("date", date);
                    bundle.putString("glucose", glucose);
                    bundle.putString("journalId", journalId);

                    gluFrag.setArguments(bundle);
                    ((GraphActivity) getActivity()).replaceFragments(gluFrag, bundle);
                }
           }
        });
        return rootView;
        // Inflate the layout for this fragment
    }

}

JournalFragment.XML

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="edu.tp.sghealthapp.JournalViewFragment"
    android:id="@+id/jv">


        <ListView
            android:id="@+id/listView"
            android:layout_below="@+id/viewPager"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:divider="@color/iron"
            android:dividerHeight="1dp" />

</LinearLayout>

JournalListViewLayout.XML

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin">

    <TextView
        android:id="@+id/txt_listTitle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_toLeftOf="@+id/arrowIcon"
        android:layout_toStartOf="@+id/arrowIcon"
        android:textColor="#000000"
        android:focusable="false"
        android:textSize="16sp"
        android:typeface="sans" />

    <ImageView
        android:id="@+id/arrowIcon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        android:focusable="false"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:src="@drawable/ic_arrow" />
</RelativeLayout>

GraphActivity.java

public class GraphActivity extends AppCompatActivity {

    Context context;
    TabLayout mTabLayout;
    ViewPager mViewPager;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        context = getApplicationContext();
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);

        setContentView(R.layout.activity_graph);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setElevation(0);


        mTabLayout = (TabLayout) findViewById(R.id.tabLayout);
        mViewPager = (ViewPager) findViewById(R.id.viewPager);
        ViewPagerAdapter pgAdapter = new ViewPagerAdapter(getSupportFragmentManager());
        pgAdapter.addFragments(new GraphFragment(), "Graph");
        pgAdapter.addFragments(new JournalViewFragment(), "Journal");
        mViewPager.setAdapter(pgAdapter);
        mTabLayout.setupWithViewPager(mViewPager);


    }

    public void replaceFragments(Fragment newFragment, Bundle bundle) {
        Fragment fragment = newFragment;
        FragmentManager fm = getSupportFragmentManager();
        FragmentTransaction ft = fm.beginTransaction();
        fragment.setArguments(bundle);
        ft.replace(R.id.jv, fragment);
        ft.commit();

    }
}

修改

ActivityGraph.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    tools:context=".GraphActivity"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/graph">


    <android.support.design.widget.TabLayout
        android:id="@+id/tabLayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/primary"
        app:tabGravity="fill"
        app:tabMode="scrollable"
        app:tabSelectedTextColor="@color/white"
        app:tabTextColor="@color/black">
        <!--To be fixed in future to occupy whole bar when mode = fixed-->


    </android.support.design.widget.TabLayout>

    <edu.tp.sghealthapp.library.graphViewPager
        android:id="@+id/viewPager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@id/tabLayout"></edu.tp.sghealthapp.library.graphViewPager>





</RelativeLayout>

编辑2

尝试过Harron和Vivek_Neel的方法，它们都有效，但会导致格式化问题

在linearLayout中放置android：layout_below =“@ + id / viewPager”会导致片段不再显示

编辑3

解决了此https://stackoverflow.com/a/34573034/5509513

的格式问题

Answer 1

   <FrameLayout
    android:id="@+id/jv"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

将此代码剪切并放入活动并检查

Answer 2

activity_graph.xml：

        <artifactId>itextpdf</artifactId>
        <version>5.5.9</version>

        <artifactId>itext-pdfa</artifactId>
        <version>5.5.9</version>

Answer 3

尝试View Pager Relative Layout的高度，并将@+id/jd添加到layout below view pager，并将其<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/graph" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal"> <android.support.design.widget.TabLayout android:id="@+id/tabLayout" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@color/ColorPrimary" app:tabGravity="fill" app:tabMode="scrollable" app:tabSelectedTextColor="#FFF" app:tabTextColor="#000">  </android.support.design.widget.TabLayout> <edu.tp.sghealthapp.library.graphViewPager android:id="@+id/viewPager" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_below="@id/tabLayout" /> <RelativeLayout android:id="@+id/jv" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_below="@id/viewPager" /> </RelativeLayout>。

请参阅此内容。

Frame Layout

编辑1

第二种方法是仅使用Fragment创建新布局。并在替换<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <FrameLayout android:id="@+id/jd" android:layout_width="match_parent" android:layout_height="match_parent"> </FrameLayout> </LinearLayout>时使用它的占位符。

ID

无法替换viewpager中的片段

3 个答案: